Excel 2016 到 Windows 中的 DataGridView Forms Visual Studio 2019 社区

Question

我使用 Excel 2016，Visual Studio 2019 社区并希望将 Excel 工作表导出到数据网格视图中。 另外我想 select 某些列然后将被采用。 程序运行到填充数据集的function 然后程序运行到catch而不显示错误信息

    private void Cmd_Fbd_Data_List_Click(object sender, EventArgs e)
    {
        try
        {
            OpenFileDialog openFileDialog1 = new OpenFileDialog();  //create openfileDialog Object
            openFileDialog1.Filter = "XML Files (*.xml; *.xls; *.xlsx; *.xlsm; *.xlsb) |*.xml; *.xls; *.xlsx; *.xlsm; *.xlsb";//open file format define Excel Files(.xls)|*.xls| Excel Files(.xlsx)|*.xlsx| 
            openFileDialog1.FilterIndex = 3;



            openFileDialog1.Multiselect = false;        //not allow multiline selection at the file selection level
            openFileDialog1.Title = "Open Text File-R13";   //define the name of openfileDialog
            openFileDialog1.InitialDirectory = @"Desktop"; //define the initial directory




            if (openFileDialog1.ShowDialog() == DialogResult.OK)        //executing when file open
            {

                string pathName = openFileDialog1.FileName;
                string fileName = System.IO.Path.GetFileNameWithoutExtension(openFileDialog1.FileName);
                DataTable tbContainer = new DataTable();
                string strConn = string.Empty;



                FileInfo file = new FileInfo(pathName);
                if (!file.Exists) { throw new Exception("Error, file doesn't exists!"); }
                string extension = file.Extension;



                switch (extension)
                {
                    case ".xls":
                        strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + pathName + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'";
                        break;
                    case ".xlsx":

                        strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + pathName + ";Extended Properties='Excel 12.0;HDR=Yes;IMEX=1;'";
                        break;
                    default:
                        strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + pathName + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'";
                        break;
                }

                String name = "DPL";// is the Name of the first Sheet


                OleDbConnection con = new OleDbConnection(strConn);

                OleDbCommand oconn = new OleDbCommand("Select * From [" + name + "$]", con);

                OleDbDataAdapter sda = new OleDbDataAdapter(oconn);

                DataTable data = new DataTable();
                // up to this line the programm works after that the Exception shows up
                sda.Fill(data);

                Dgv_Data_List.DataSource = data;


            }

        }
        catch (Exception)
        {
            MessageBox.Show("Error!");
        }
    }

Answer 1

我只是在检查OleDbDataAdapter.Fill 的 MSDN 文档，它说它需要一个 ADODBRecordSet 作为第二个参数。 这里不是这样吗？ 查看文档中的示例，看看这种方式而不是使用 OleDbCommand 是否适合您。